Putting my posters into context... The London Underground.

These are the photos I have chosen to put my posters into context... I am going to photoshop my images onto these.
I have chosen a range of 4 Sheets, 6 Sheets and escalator panels as previously researched.

Escalator panels

4 Sheets

Backlit 6 Sheet

6 Sheet

I want to work out how to successfully use photoshop to really show what I am trying to portray... including using backlighting effects.